2018 GMC Terrain SLT vs. Denali
iSeeCars' unbiased and data-driven comparison of the 2018 GMC Terrain SLT and 2018 GMC Terrain Denali contrasts the two cars across a broad spectrum of vehicle specifications to determine which car is better. In addition to comparing pricing and specs, iSeeCars uses all the ratings, rankings, and insights from its comprehensive analyses of each vehicle model, including calculations of reliability, safety, depreciation, value retention, and the vehicle's projected lifetime recalls (based on analyzing over 25 billion data points). This in-depth evaluation is used to identify which vehicle represents a better overall choice for shoppers who are considering both the 2018 GMC Terrain SLT and the 2018 GMC Terrain Denali.
In comparing the 2018 GMC Terrain SLT's and the 2018 GMC Terrain Denali's specifications and ratings, the 2018 GMC Terrain SLT has the advantage in the areas of typical lower range of pricing for used cars, and fuel efficiency. The 2018 GMC Terrain Denali has the advantage in the area of base engine power. The 2018 GMC Terrain SLT and 2018 GMC Terrain Denali have the same overall quality score Based on this comparison of the 2018 GMC Terrain SLT's and the 2018 GMC Terrain Denali's specifications and ratings, the 2018 GMC Terrain SLT is a better car than the 2018 GMC Terrain Denali.
Pricing: A used 2018 GMC Terrain SLT ranges from $11,041 to $21,943 while a used 2018 GMC Terrain Denali is priced between $13,995 to $23,996.
Resale/Retained Value: Looking at the 5-year depreciation rate, the 2018 GMC Terrain SLT and the 2018 GMC Terrain Denali both lose 49.3 percent of their value.
Quality Rating: The iSeeCars Overall Quality rating for the GMC Terrain is 7.9 out of 10. GMC Terrain is ranked 11 out of 19 Best Small SUVs based on its reliability, retained value, and safety ratings. Out of 66 Best Crossover SUVs, the GMC Terrain is ranked 27 and the GMC Terrain is ranked 27 based on its reliability, retained value, and safety ratings.
Reliability Rating: iSeeCars' Reliability Rating for the GMC Terrain is 7.7 out of 10.
Engine Power and Fuel Efficiency Comparison: For engine performance, the 2018 GMC Terrain SLT’s base engine makes 170 horsepower, and the 2018 GMC Terrain Denali base engine makes 252 horsepower. The SLT is rated to deliver an average of 28 miles per gallon, with a highway range of 447 miles. The Denali is rated to deliver an average of 24 miles per gallon, with a highway range of 417 miles. This gives the 2018 GMC Terrain SLT the fuel efficiency and maximum range advantage over the 2018 GMC Terrain Denali. The SLT uses regular unleaded, and the Denali uses premium unleaded.
Safety Ratings: The GMC Terrain has an average safety rating of 5 out of 5 Stars based on NHTSA's crash test ratings.
New Car Pricing
Asking Price:
-
Starting MSRP:
31320
Category Avg Starting MSRP:
(Compact SUVs)
24370
Category Starting MSRP Range:
(Compact SUVs)
22550 - 27895
New Car Pricing
Asking Price:
-
Starting MSRP:
37520
Category Avg Starting MSRP:
(Compact SUVs)
24370
Category Starting MSRP Range:
(Compact SUVs)
22550 - 27895
Used Car Pricing
Avg Used Car Price:
16833
Price Range:
11041 - 21943
Category Avg Price:
(Compact SUVs)
16311
Category Avg Price Range:
(Compact SUVs)
12871 - 23031
# Used Cars for Sale Nationally:
116
Avg Mileage of Used Cars for Sale:
104003
# Good or Great Deals:
47
Used Car Pricing
Avg Used Car Price:
19198
Price Range:
13995 - 23996
Category Avg Price:
(Compact SUVs)
16311
Category Avg Price Range:
(Compact SUVs)
12871 - 23031
# Used Cars for Sale Nationally:
107
Avg Mileage of Used Cars for Sale:
95731
# Good or Great Deals:
57
GMC Terrain Scores & Rankings
Overall Score:
7.9 / 10
Reliability:
7.7 / 10
Retained Value:
7.9 / 10
Safety:
8.0 / 10
GMC Terrain Scores & Rankings
Overall Score:
7.9 / 10
Reliability:
7.7 / 10
Retained Value:
7.9 / 10
Safety:
8.0 / 10
iSeeCars Reliability Insights for 2018 GMC Terrain SLT
Remaining Life Expectancy (years):
3.7
Typical Category Remaining Life Expectancy:
(Compact SUVs)
4.1
Category Remaining Life Expectancy Range:
(Compact SUVs)
2.6 - 8.7
Chance of Reaching 200k Miles for a New Car:
0.11
iSeeCars Reliability Insights for 2018 GMC Terrain Denali
Remaining Life Expectancy (years):
3.7
Typical Category Remaining Life Expectancy:
(Compact SUVs)
4.1
Category Remaining Life Expectancy Range:
(Compact SUVs)
2.6 - 8.7
Chance of Reaching 200k Miles for a New Car:
0.11
Expected 30-year Lifetime Recalls
Expected Lifetime Recalls:
4.214272190172314
Typical Category Recalls:
(Compact SUVs)
4.2
Category Range for Recalls:
(Compact SUVs)
1.9 - 14.0
Expected 30-year Lifetime Recalls
Expected Lifetime Recalls:
4.214272190172314
Typical Category Recalls:
(Compact SUVs)
4.2
Category Range for Recalls:
(Compact SUVs)
1.9 - 14.0
GMC Terrain Rankings
Ranking
1 out of / 19Ranking
4 out of / 10Ranking
4 out of / 6Ranking
5 out of / 19Ranking
5 out of / 10Ranking
5 out of / 6Ranking
7 out of / 66Ranking
10 out of / 19Ranking
11 out of / 19Ranking
11 out of / 19Ranking
13 out of / 19Ranking
13 out of / 19Ranking
13 out of / 18Ranking
14 out of / 19Ranking
14 out of / 18Ranking
15 out of / 19Ranking
15 out of / 19Ranking
16 out of / 19Ranking
18 out of / 66Ranking
20 out of / 66Ranking
21 out of / 66Ranking
23 out of / 66Ranking
23 out of / 54Ranking
27 out of / 66Ranking
27 out of / 54Ranking
32 out of / 66Ranking
37 out of / 66Ranking
40 out of / 66Ranking
42 out of / 66Ranking
49 out of / 66Ranking
51 out of / 66GMC Terrain Rankings
Ranking
1 out of / 19Ranking
4 out of / 10Ranking
4 out of / 6Ranking
5 out of / 19Ranking
5 out of / 10Ranking
5 out of / 6Ranking
7 out of / 66Ranking
10 out of / 19Ranking
11 out of / 19Ranking
11 out of / 19Ranking
13 out of / 19Ranking
13 out of / 19Ranking
13 out of / 18Ranking
14 out of / 19Ranking
14 out of / 18Ranking
15 out of / 19Ranking
15 out of / 19Ranking
16 out of / 19Ranking
18 out of / 66Ranking
20 out of / 66Ranking
21 out of / 66Ranking
23 out of / 66Ranking
23 out of / 54Ranking
27 out of / 66Ranking
27 out of / 54Ranking
32 out of / 66Ranking
37 out of / 66Ranking
40 out of / 66Ranking
42 out of / 66Ranking
49 out of / 66Ranking
51 out of / 66Available Body Styles
SUV
Available Body Styles
SUV
Available Drivetrain Options
Gasoline
Available Drivetrain Options
Gasoline
Other GMC Terrain Trim Levels
Denali, SL, SLE, SLE Diesel, SLT Diesel
Other GMC Terrain Trim Levels
SL, SLE, SLE Diesel, SLT, SLT Diesel
Warranty Information
Warranty, Bumper-to-Bumper:
3 years / 36000 miles
Warranty, Powertrain:
5 years / 60000 miles
Warranty, Roadside Assistance:
5 years / 60000 miles
Warranty Information
Warranty, Bumper-to-Bumper:
3 years / 36000 miles
Warranty, Powertrain:
5 years / 60000 miles
Warranty, Roadside Assistance:
5 years / 60000 miles
Safety Ratings
NHTSA Safety Rating (last 5 year average):
5 out of 5 Stars
2026 NHTSA Overall Rating:
4 out of 5 Stars
2026 NHTSA Front Crash Overall Rating:
5 out of 5 Stars
2026 NHTSA Side Crash Overall Rating:
4 out of 5 Stars
2026 NHTSA Rollover Rating:
4 out of 5 Stars
IIHS Safety Rating:
Not yet available
Safety Ratings
NHTSA Safety Rating (last 5 year average):
5 out of 5 Stars
2026 NHTSA Overall Rating:
4 out of 5 Stars
2026 NHTSA Front Crash Overall Rating:
5 out of 5 Stars
2026 NHTSA Side Crash Overall Rating:
4 out of 5 Stars
2026 NHTSA Rollover Rating:
4 out of 5 Stars
IIHS Safety Rating:
Not yet available
Base Drivetrain Specs
Horsepower:
170 hp @ 5600 rpm
Torque:
203 foot-lbs @ 2000 rpm
Power-to-Weight Ratio (higher is better):
0.049 hp per pound
Towing capacity:
1500 lbs
Base Drivetrain Specs
Horsepower:
252 hp @ 5500 rpm
Torque:
260 foot-lbs @ 2500 rpm
Power-to-Weight Ratio (higher is better):
0.069 hp per pound
Towing capacity:
Not yet available
Engine Specifications
Engine Size:
1.5 liters
Engine Configuration:
Inline
Number of Cylinders:
4
Transmission:
Automatic
Standard/Optional Drivetrain Type:
FWD / 4X4
EPA Fuel Economy
(City/Highway/Combined MPG):
26 / 30 / 28
Range (city/hwy):
387 / 447 miles
Recommended Fuel Type:
Regular Unleaded
Engine Specifications
Engine Size:
2 liters
Engine Configuration:
Inline
Number of Cylinders:
4
Transmission:
Automatic
Standard/Optional Drivetrain Type:
FWD / 4X4
EPA Fuel Economy
(City/Highway/Combined MPG):
22 / 28 / 24
Range (city/hwy):
328 / 417 miles
Recommended Fuel Type:
Premium Unleaded
Standard/Optional Features
Alloy wheels:
Standard
Android Auto:
Standard
Apple CarPlay:
Standard
Bench Seats:
Standard
Bluetooth:
Standard
Heated Seats
Standard
Internet Radio:
Standard
Keyless Entry:
Standard
Keyless Ignition:
Standard
Leather Upholstery:
Standard
Navigation System:
Standard
Power outlet:
Standard
Roadside assistance:
Standard
Satellite radio:
Standard
Voice Recognition:
Standard
Wifi:
Standard
Heated Steering Wheel:
Available
Parking Sensors:
Available
Power Lift Gate:
Available
Roof Rack:
Available
Sunroof/Moonroof:
Available
Trailer Hitch:
Available
Adaptive Cruise Control:
N/A
Air Suspension:
N/A
Automatic Parking:
N/A
Captain's seat:
N/A
Cooled/Ventilated Seats:
N/A
Front Bench Seats:
N/A
Massage Seats:
N/A
Paddle Shifters:
N/A
Panoramic Sunroof/Moonroof
N/A
Quad Seats:
N/A
Wireless Smartphone Charging:
N/A
Standard/Optional Features
Alloy wheels:
Standard
Android Auto:
Standard
Apple CarPlay:
Standard
Bench Seats:
Standard
Bluetooth:
Standard
Heated Seats
Standard
Internet Radio:
Standard
Keyless Entry:
Standard
Keyless Ignition:
Standard
Leather Upholstery:
Standard
Navigation System:
Standard
Power outlet:
Standard
Roadside assistance:
Standard
Satellite radio:
Standard
Voice Recognition:
Standard
Wifi:
Standard
Heated Steering Wheel:
Standard
Parking Sensors:
Standard
Power Lift Gate:
Standard
Roof Rack:
Available
Sunroof/Moonroof:
Available
Trailer Hitch:
Available
Adaptive Cruise Control:
N/A
Air Suspension:
N/A
Automatic Parking:
Available
Captain's seat:
N/A
Cooled/Ventilated Seats:
Available
Front Bench Seats:
N/A
Massage Seats:
N/A
Paddle Shifters:
N/A
Panoramic Sunroof/Moonroof
N/A
Quad Seats:
N/A
Wireless Smartphone Charging:
Available
Safety Features
Backup camera:
Standard
Rear Seat Reminder:
Standard
360-Degree Camera:
N/A
Blind Spot Monitoring:
N/A
Driver Attention Monitoring:
N/A
Forward Collision Warning:
N/A
Lane Departure Warning:
N/A
Lane Keeping Assist:
N/A
Pedestrian Detection:
N/A
Rear Cross-Traffic Alert:
N/A
Safety Features
Backup camera:
Standard
Rear Seat Reminder:
Standard
360-Degree Camera:
Available
Blind Spot Monitoring:
Standard
Driver Attention Monitoring:
N/A
Forward Collision Warning:
Standard
Lane Departure Warning:
Available
Lane Keeping Assist:
Available
Pedestrian Detection:
Available
Rear Cross-Traffic Alert:
Standard
Interior Dimensions
Front Head Room:
40 inches
Front Leg Room:
40.9 inches
Front Shoulder Room:
57.2 inches
Rear Head Room:
38.2 inches
Rear Leg Room:
39.7 inches
Rear Shoulder Room:
55.6 inches
Cargo Space:
29.6 cubic feet
Cargo Space, 2nd-row seat folded down:
63.3 cubic feet
Overall Interior Volume:
Not yet available
Interior Dimensions
Front Head Room:
40 inches
Front Leg Room:
40.9 inches
Front Shoulder Room:
57.2 inches
Rear Head Room:
38.2 inches
Rear Leg Room:
39.7 inches
Rear Shoulder Room:
55.6 inches
Cargo Space:
29.6 cubic feet
Cargo Space, 2nd-row seat folded down:
63.3 cubic feet
Overall Interior Volume:
Not yet available
Exterior Dimensions
Curb Weight:
3487 lbs
Width:
72.4 inches
Height:
65.4 inches
Length:
182.3 inches
Wheelbase:
107.3 inches
Ground Clearance:
7.9 inches
Exterior Dimensions
Curb Weight:
3635 lbs
Width:
72.4 inches
Height:
65.4 inches
Length:
182.3 inches
Wheelbase:
107.3 inches
Ground Clearance:
7.9 inches
Standard Wheel/Tire Information
Wheel Size:
18.0 x 7.0 inches
Wheel Type:
painted aluminum alloy
Tire Size:
P225/60R18
Standard Wheel/Tire Information
Wheel Size:
19.0 x 7.5 inches
Wheel Type:
polished aluminum alloy with painted accents
Tire Size:
P235/50R19
